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I installed Ubuntu 12.04 using mini.iso And I installed Gnome 3, and bleachbit and remastersys etc. When I open these applications from Menu, and it ask for password. I entered password and it does not accepting and says "Incorrect password". But, I could enter password through Terminal and run above mentioned applications. How can I bypass the problem?

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marked as duplicate by Radu Rădeanu, Eric Carvalho, user68186, aquaherd, Kevin Bowen Jun 18 '13 at 20:58

This question was marked as an exact duplicate of an existing question.

I got the solution from here… – Vimal Kumar Jun 28 '12 at 18:18

i had the same problem now it's ok

run the command gksu-properties and change the "Authentication mode" to "sudo" and close. Now do gksu bleachbit, or whatever GUI application you want to run as root, and type your password (the one you use for updating and installing)

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